Patent US2070644A successfully refreshed from Google Patents.
Patent US923568A successfully refreshed from Google Patents.
US923568A
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US
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Pressure-reducing valve.
Assignee: Individual
•
Filing: 1909-04-12
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Granted: 1909-06-01
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Expires: 1929-04-12
Abstract
No abstract record available.
Inventors
- 👤 Filiberto Nicola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:49
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; F16K17/105; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1912-05-31 | 1912-11-30 | 1913-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-31 | 1916-11-30 | 1917-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-31 | 1920-11-30 | 1921-06-01 | $7700.00 | Window Closed / Lapsed |